Home / 638,701.14-881,420.34-412,740.30

Finding the Fourth Proportional to 638,701.14, 881,420.34 and 412,740.30

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Solution

The fourth proportional to 638,701.14, 881,420.34 and 412,740.30 is: 569,589.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,701.14 : 881,420.34 = 412,740.30 : x
  2. Step 2: Convert to fraction form
    638,701.14/881,420.34 = 412,740.30/x
  3. Step 3: Cross multiply
    638,701.14x = 881,420.34 × 412,740.30
  4. Step 4: Simplify right side
    638,701.14x = 363,797,695,557.70
  5. Step 5: Solve for x
    x = 363,797,695,557.70/638,701.14
  6. Step 6: Final answer
    x = 569,589.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.